In what type of a database system is the central database replicated at all remote locations?

In a distributed database system, the central database is replicated across all remote locations, enabling each site to access the same data. This replication ensures that users at different geographical locations can retrieve and manipulate data with reduced latency and decreased load on a central server. The design of a distributed database enhances data availability and reliability, as multiple copies of data exist across different nodes.

This structure serves several purposes, including improving performance by reducing the distance data has to travel for access in various locations and ensuring data consistency across multiple sites. Furthermore, if one location goes down, other locations can still function normally due to the availability of replicated data.

Each of the other types listed does not involve this specific structure of central data replication across remote sites. A partitioned database typically divides data into segments that are stored in different locations rather than replicating the whole database, normalized databases focus on minimizing redundancy within a single structure, and networked databases refer to the connection and interaction paths between networks rather than the replication of a central database.